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Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2016/02/25 01:25:18 UTC

[jira] [Commented] (HBASE-15321) Ability to open a HRegion from hdfs snapshot.

    [ https://issues.apache.org/jira/browse/HBASE-15321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15166405#comment-15166405 ] 

Ted Yu commented on HBASE-15321:
--------------------------------

Please show your code.

> Ability to open a HRegion from hdfs snapshot.
> ---------------------------------------------
>
>                 Key: HBASE-15321
>                 URL: https://issues.apache.org/jira/browse/HBASE-15321
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 2.0.0
>            Reporter: churro morales
>             Fix For: 2.0.0
>
>
> Now that hdfs snapshots are here, we started to run our mapreduce jobs over hdfs snapshots.  The thing is, hdfs snapshots are read-only point-in-time copies of the file system.  Thus we had to modify the section of code that initialized the region internals in HRegion.   We have to skip cleanup of certain directories if the HRegion is backed by a hdfs snapshot.  I have a patch for trunk with some basic tests if folks are interested.  



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